baseimage-tutorial-framework/lib/tfw/networking/server_connector.py

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import zmq
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from functools import partial
from zmq.eventloop import ioloop
from zmq.eventloop.zmqstream import ZMQStream
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from ..config import PUBLISHER_PORT, RECEIVER_PORT
from ..util import ZMQConnectorBase
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ioloop.install()
class ServerDownlinkConnector(ZMQConnectorBase):
def __init__(self, zmq_context=None):
super(ServerDownlinkConnector, self).__init__(zmq_context)
self._zmq_sub_socket = self._zmq_context.socket(zmq.SUB)
self._zmq_sub_socket.connect('tcp://localhost:{}'.format(PUBLISHER_PORT))
self._zmq_sub_stream = ZMQStream(self._zmq_sub_socket)
self.subscribe = partial(self._zmq_sub_socket.setsockopt_string, zmq.SUBSCRIBE)
self.unsubscribe = partial(self._zmq_sub_socket.setsockopt_string, zmq.UNSUBSCRIBE)
self.register_callback = self._zmq_sub_stream.on_recv
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class ServerUplinkConnector(ZMQConnectorBase):
def __init__(self, zmq_context=None):
super(ServerUplinkConnector, self).__init__(zmq_context)
self._zmq_push_socket = self._zmq_context.socket(zmq.PUSH)
self._zmq_push_socket.connect('tcp://localhost:{}'.format(RECEIVER_PORT))
def send(self, anchor, response):
self._zmq_push_socket.send_multipart([anchor, response])
class ServerConnector(ServerUplinkConnector, ServerDownlinkConnector):
def __init__(self, zmq_context=None):
super(ServerConnector, self).__init__(zmq_context)